NSN 4820-00-200-0063, 4820002000063
Cancelled -> Replaced by 1630004838411

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 002000063
Codification Country: United States
Item Name Code: INC 37648
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

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DLMS^® Summary

National Stock Number 4820-00-200-0063

National Stock Number (NSN) 4820-00-200-0063, or NIIN 002000063, (valve,bleeder,hydraulic system) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 1630004838411.

There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is unique to one weapons system.

This NSN is assigned to Item Name Code (INC) 37648. [A METALLIC, THREADED, SCREW-SHAPED ITEM USED IN HYDRAULIC BRAKE CYLINDERS, HYDRAULIC POWER UNITS, MISSILE LAUNCHING HYDRAULIC SYSTEMS, AND THE LIKE, FOR THE PURPOSE OF PROVIDING A MEANS OF RELEASING AIR FORM AND/OR FLUSHING A HYDRAULIC SYSTEM. IT MAY BE FURNISHED WITH OR WITHOUT A DUST CAP. EXCLUDES:SPRING LOADED OR AUTOMATIC TYPE AIR PRESSURE RELIEF VALVES, AND BOLT, FLUID PASSAGE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820002000063 does not contain precious metals.

This NSN is associated to Schedule B 8481809050: other taps, cocks, valves, etc., nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

SPECIAL FEATURES: (FEAT) STEEL,SPEC DATA,MIL,MIL-S-6050,TYPE DESIGNATOR,A/A; CADMIUM-PLATED FINISH; DIM. DATA,1-1/16 IN. LG OVER-ALL,3/8 IN. ACROSS HEX FLATS,7/16 IN. LG HEX,5/8 IN. FROM VALVE END TO HEX SHOULDER; THREADED TYPE HOSE CONNECTOR,THD DATA,10-32,NF,RH,CLASS 2B THD OR CLASS 2 FIT,5/16 IN. LG; VALVE SEAT END DATA,0.190 IN. LARGEST OD OF TAPER,0.095 IN. LG TAPER,0.220 IN. LG EXCL THD PORTION,0.173 IN. FROM CENTER OF INLET HOLE TO VALVE END,0.070 IN. DIA INLET HOLE,EXTERNAL THD DATA,1/4-28,UNF OR NF,RH,CLASS 3A THD OR CLASS 3 FIT,11/32 IN. LG; DRAIN HOLE DATA,0.0781 IN. DIA,0.922 IN. LG